Electric fitting



d aac www M L .I lili z\l Nl M www Pw.. Y WM W Tnmd Ww Mmm 0 l D F la /mw 1 M @ab 9 i923.,

Patented @et 9, i923.

er te i :La

DON N. THOMPSON, F SYRCUSE, NEW YORK, ASSIG-NOR TO d: SEYMDUER,

INC.,

OF SOLVAY, NEW' YORK, A CORPORATION OF NEW' YORK.

ELECTRIC FITTING.

i Application filed November T0 all ifi/mm t may concern:

Be it known that I, DON N. THOMPSON, a citizen of the United States, and residing at Syracuse. county of Onondaga, State oi New York, have invented certain new and use'fful Improvements in Electric FittiDgS, 0f which the following is a specification.

Electric lamp sockets and attachment plug sockets are necessarily mounted on supporting .fixtures and customarily have screw threaded engagement therewith, it being desirable that they be readily detachable, although firmly secured when in position. @ne difficulty with providing screw threads on the lamp socket or other similar xture and on the support, is that the socket mustbe rotated relatively to the support in attaching it thereto, thereby twisting the wires which pass through the supporting stand to a main trunk line. This twisting of the wires is undesirable, as it may lead to their rupture.

lt is the object of this invention to provide a device which will permit of connecting a r lamp socket base to an electric conduit or support without turning the socket or twisting the wires. These advantages are obtained by providing the socket base with a separable coupling at one end, the separable portion of which is screw threaded for connection to the wire conduit or other fixture. The wires are first drawn through the fixture arm, enough wire being` lett protruding therefrom to reach the terminal screws on the socket base. and the separable portion of the coupling is untastened from the socket and screwed into final position on the conduit. after which the two parts of: the separable coupling are secured together again,` fm the wire ends secured to the wire terminals,

and the socket is ready for use.

flue embodiment ot' my .invention is disclosed in the 'following description when taken in connection with the accompanying l drawings, in which- Fig. l is a side elevation of a lamp socket hase secured to the wire conducting pipe, part being shown in section:

Fig. 2 is a similar side elevation as seen from the right of Figure l; and

Fig. 3 is a disassembled view of the invention showing the lamp socket base in position to be attached to the wire conducting pipe.

The conventional lamp socket base indi- 8, 1919. Serial No. 336,636.

cated by the numeral l0 in the drawings is adapted to be secured to the wire conduit or fixture arm ll by a separable coupling comprising a member l2 permanently secured to the socket base and a member 13 separablv attached to the member l2. Member l2 is yoke-shaped, having downwardly extending parallel arms., each of the arms having therein a threaded opening for a screw 14.

The screws le are axially aligned and adapted to enter, when partially unscrewed from yoke 12, in slots 13b formed in the upwardly directed arms ot `yoke member 13a, which yoke comprises, together with the cylindrical sleeve 13C to which it is secured, the separable member of the coupling. Sleeve 18C is threaded interiorly to correspond with the threaded end of conduit 1l.

The corners of the arms ot yoke 13a adjacent the slots 13b are bent outwardly to form ears 18d which comprise stops cooperating with screws 14C in retaining the `two parts of the coupling together. As shown in Figures l and 2, when the two parts of the coupling are together and the screws 14 tightened, the parts are firmly held together inasmuch as the heads ot screws 14. can not pass by the ears or stops 13d.

In attaching the lamp socket, the wires are drawn through the wire conduit or fixture arm and a sufficient length left protruding to reach the wire terminals on the socket base when the latter is in position. The screws 14 are then backed out or loosened. and the parts ot the coupling separated, after which the wires are passed through the central opening ot the sleeve and the latter screwed into position on the end of arm l1. as shown in Fig. 3. The socket base is then placed in position, with screws 14k at the bottom of slots 13b, and the screws tightened, thereby firmly securing it to the fixture arm. The ends oi the `wires are next secured to the wire terminals l5 and the socket is ready for use. ln detaching the socket, these steps are reversed.

The exact form oit coupling may be modified, and the invention is not limited to the exact embodiment above described.

What l claim to be my invention is:

l. The combination with the insulating base of an electric fitting provided with wire terminals, of means for attaching the same to a wire conduit comprising a septiti vsame to a wire conduit comprisin arable couplingr having one part secured to said base the other part or said coupling beineA adapted to be securedL to said wire conduit and having)r a' portion extending toward and adapted to engage the base to prevent lateral movement of the insulating base relatively to the Wire conduit.

2. The combination With the insulating base of an electric fitting provided with Wire terminals, of means 'for attaching the e', e rok@ member secured to the base and a second yolre member Which is adapted to be secured tions adapted to tit against said insulating base and to lock said base against swinging movement relatively to said second member, when said members are secured together.

ln testimony whereof I aiX my signature.

DON N. THOMPSON. 

